Shoe-pressing machine



Jan. 14, 1930.

H. BALLARD SHOE PRESSING' MACHINE Fild May 2, 1927 3 Sheets-Sheet 1 Fig.l.

Jan. 14, 1930. M. H. BALLARD I SHOE PRESSING MACHINE Filed May 2. 192'!s Sheets-Sheet 2 Q Jan. 14, 1930. M. H. BALLARD SHOE PRESSING MACHINEFiled May 2, 1927 3 Sheets-Sheet 3 A VE N TU/P;

Patented Jan. 14, 1930 UNITED STATES PATENT OFFICE MILTON H. BALLARD, OFBEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MA- OHINERY CORPORATION,OF PATERSON, NERV JERSEY, A CORPORATION OF NEW JERSEY SHOE-PRESSINGMACHINE Application filed May 2, 1927. Serial No. 188,247.

This invention relates to machines for applying pressure to the bottomsof boots and shoes, and is illustrated herein as embodied in a heel-seatforming machine arranged to apply molding pressure to the heel-seatportions of shoes to prepare the shoes for the reception of wood heels.

In the manufacture of shoes to which wood heels are to be applied, it isusual to trim surplus stock from the heel-seat portions of the soles ofthe shoes by beveling the edges of the hee1-seat portions of the solesto bring them to a shape approximately complemental to that of theattaching surfaces of the wood heels which are to be attached. In orderto provide a solid heel-seat and to cause the heel-seat portion of thesole of the shoe to contact over the greater portion of its area withthe attaching surface of the wood heel which is to be attached,heel-seat forming or molding machines have come into use. A

heel-seat forming machine is commonly provided with a mold or a pairofmolds readily changeable in accordance with the size and shape of theshoe to be operated upon, a work support or a pair of work supports, andmeans for causing relative movement of each mold and the correspondingwork support so. as to apply a heavy molding pressure to the heel-seatportion of a shoe mounted upon a last carried by the work support.

:An object of this invention is to provide, in connection with mechanismfor applying heavy molding pressure and improved measuring means adaptedto be incorporated in a heel-seat forming machine and by virtue of whichpressure-applying movements ofthe pressure-applyin means will beuniformly effective. irrespective of variations in the heights of thelasts of different shoes operated upon. With this object in view, theillustrated machine is provided with a shoe support, a heel-seat formingmold or die, and mechanism for moving the die preliminarily into contactwith the heel-seat of the shoe, the said mechanism being arranged tohold the die against regression from any point to which it may be movedand to be released at will to permit the adjustment of the shoe and dieif their initial adjustment is not satischine, the mold or die ismounted on a carrier which is yieldingly upheld and-is moved toward theshoe by means of a member of varying thickness arranged to be insertedbetween surfaces formed respectively on the machine frame and on the diecarrier. The member is illustrated as a wedge arranged for operationmanually by a hand lever and if of relatively small angle so as to avoiddanger of the wedge slipping when the forming pressure is appplied tothe shoe. The small angle of the wedge also gives mechanical advantagetothe operator in applying preliminary pressure to the die. In orderthat the wedge may be automatically retracted when the pressure isreleased, the illustrated organization is provided with a spring thattends constantly to retract the wedge, the friction of the wedge againstthe cooperaing surfaces of the die carrier and frame being sufficient tohold the wedge in place against the tension of the spring after thepreliminary pressure is applied.

As usual in machines of this type, the work support is arranged tovswing into and out of position under the die and has its last pinarranged for adjustment in the plane of the heel-seat so that theheel-seat of a shoe placed upon the support may be located under the diein proper relation thereto. 'VVith the organization illustrated, the diemay then be brought down by operation of a hand lever intocontact withthe heel-seat. The position of the shoe relatively to the die is thenshifted as determined by the judgment of the operator, the die beingreleased, if necessary, by reverse movement of the hand lever. After,the heel-seat and die have been properly located, the pressure. of thedie is increased by movement of the wedge to prevent accidentaldisplacement of the shoe, and the heel-seat forming pressure efiected bymovement of the Work support is then caused to take. place. For thispurpose, in the illustrated machine, a treadle having a lost-motionconnection with a clutch stop lever is provided, preliminary movementofwhich, permitted by the lost motion, may be utilized toapply upwardpressure to the work support through the yielding connection. Thisadditional :pre liminary pressure of the Work support is useful inmaintaining the shoes and die in proper relationship andpreventingaccidental slipping of the wedge in case the operator failed to applysufficient force to the hand lever to secure the. wedge in position. Itis to be understood, however, that the connections from the treadle tothe; work support may be omitted and the treadle utilized solely fortripping the clutch.

the die by the wedge as would be necessary 'to take care of the variousheights of lasts used in the various sizes of shoes, a height adjustmentfor the work support is preferably provided. The operator uses this adjustment whenever necessary to bring the heelseat of the shoe into closerelation to the die before operating thewedge to take up the remainingdistance between the die and shoe and apply the preliminary pressure.

With these and other objects and 'features in view, the invention willbe described in v ganization, is similar. to that disclosed in appresent invention may be utilized in connec-' tion with either of thegeneral organizations connection with the accompanying drawings andpointed out in the appended claims- In the drawings, 7 v Fig. 1 isa sideelevation of a machine embodying the present invention;

Fig. 2 is a plan view of the top of the machine; 7

Fig. 3 is a front elevation of the parts shown in Fig. 2; and

Fig. 4 is a side elevation of the upper part of the machine fromthe sideopposite to that shown in Fig. 1.

' The illustrated machine, in its generalorlication Seral No. 36,922,filed June 13, 1925, y' R. E. Duplessis, and in application Serial No.112,279, filed May 28, 1926, by Ballard and Seely. It is to beunderstood that the disclosed in these prior app1ications,"though, forconvenience of illustration merely, the construction herein shown ismore nearly similar to that disclosed in the earlier application, towhich reference may be hadfor explanation of parts not herein fullydescribed. I

In the drawings, the numeral '10 indicates the frame of the machine inwhich ismounted a shaft 12. On the saft is an eccentric '14 whichoperates through an eccentric strap 16 to straighten a toggle18, '20, towhich the order to avoid as much movement of strap is connected by a pin17. The upper link 18 of the toggle is connected to a sliding post22,and the lower link 20 is connected to a plunger-24 which slides in acylindrical chamber 26 on the frame and is sustained by a heavy spring28. Between the eccentric 14.

is a spring 44. The lever 42 is pivoted at 46 g and has its other armconnectedby a link 48 to the post 22. Depression of the treadle 36,therefore, acts through the spring 44to lift upwardly on the post 22until the lostmotion connection between the rod 34 and the lever 32 istaken up, whereupon the clutch will be tripped. A slight upward movementof the post 22 is permitted because the hole in the eccentric strap16through which the pin '17 passes is slightly elon ated. The gear 30 iscontinuously operate through suitable gearing connecting it to anelectric motor 50. 7

; Secured to the upper portion of the framework 10 is a rearwardlytilted frame 52 held by heavy rods 54 tothe frame 10. Secured by. therods 54 to the frame 52 is ahead 56 in which a die carrier 58 is mountedfor sliding movement, the axis of the die carrier being in longitudinalalinement with the post 22. The

portion of Y the die [carrier which passes through the head 56 iscylindrical and, to prevent it from turning and maintain itin a raisedposition, the upper end of the carner is slotted (Fig. 4) to receiveapin 60 which passes through thehead and the slot in the Between the pinand the head of the screw low the head 56 the sides of the carrier 58are flattened, and this portion of the carrier {is embraced by a long,bifurcated wedge 66, the

upper surface of the wedge being perpendicular to the axis of thecarrier; 'andbearing-bn the head-56. The lower'f ace of thewedge isinclined and" T engages inclined I surfaces formed "on lateralprojections 68 of the learrier. The angle of the'wedge is m'adeenough'less than the angle oflrepo se'when the wedge carrier 58. A screw 62passes freely through the pin 60 and is threaded into-the carrier 58.

is subjected to the greatest possible pressure by the machine so thatthere will be no danger of thewedge slipping when'the'po'wer pressure isapplied tothe shoe. The rear end of the wedge 56 is guidedforrectilinear movement in a depressionformed in a supporting plate 70 andis operated by a hand'lever 72 which is pivoted at 74 to the frame ofthe machine and carries on its lower side a 1011176 (Fig. 2) whichenters a slot 78 formed in the wedge 66, the slot permitting rectilinearmovement of the wedge as the lever 72 is swung on its pivot. To retractthe wedge and maintain it in retracted position, a spring 80 is providedwhich is wound about the pivot 74 of the lever and has one of its endsheld stationary while the other end engages a pin 82 on the lever 72,the spring being under sufficient tension to retract the wedge and holdit against a stop 84 which preferably is formed of yielding material soas to deaden the blow of the wedge against it when the wedge isretracted by its spring. Removably attached to the die carrier 58 is adie 86 (Fig. 3), the lower face of the die being shaped to impart to theheel-seat portion of the shoe a form suitable to receive the cuppedheel-seat face of a woodheel.

To support the shoe, a jack of the type fully disclosed in the priorapplication first mentioned is provided which comprises a member 88pivoted to the post 22 at 90 so that it may be swung into and out of aposition under the die 86. Telescoping into the member 88 is a threadedmember 92 upon which is a nut 94 which can be conveniently rotated tovary the height of the shoe support or jack. The member 92 supports aheel pin 96, between which and the member 92 are provided adjustments toenable the pin to be tipped and shifted so that the heel-seat of theshoe may be brought into parallelism with the face of the die which isto act upon it.

In the operation of the machine, the last ofa shoe such as a turn orMcKay shoe, to which a wood heel is to be attached, is placed upon thelast pin 96, the heel-seat of the shoe having been previously fitted bythe removal of the peripheral portion of the heel end of the sole. Theoperator, grasping the shoe, tips the shoe support about the pivot 90 tolocate the heelseat of the shoe longitudinally under the die 86 andlocates the shoe laterally with respect to the die, as permitted by theabove-mentioned adjustments provided in the work support. the shoe andthe die is substantial, he will operate the nut 94 to raise the shoe andbring the heel-seat into close relation to the die 86. He then graspsthe handle 72 and draws it toward him, thus moving the wedge 66forwardly and causing it to move the die carrier 58 toward the shoe, thedie beingheld by the wedge against regression from the point to which ithas been moved. If he finds that the die is not in proper relation tothe heel-seat, he

' may withdraw the wedge by reverse move- If the space between theheel-seat of determined by the strength of the spring 28 V .which istensioned by downward movement of the plunger 24 to which the lower link20 of the toggle is pivoted. After a half revolution, the eccentricstops with the work under pressure, so to remain until the operator hassimilarly treated a shoe by the duplicate mechanism on the opposite sideof the machine, after which the treadle will be again depressed and theeccentric 14 operated another half revolution to release the pressure onthe shoe. After treatment the materials of the shoe will be suiiicientlycompressed so that the shoe support may be swung from un-' der the die,even before the wedge-retracting spring 80 has time to retract the wedgeand permit the die carrier to be raised by its elevating spring 64. Theretraction of the wedge and elevation of the die, however, take placewith preliminary pressure and holdingthe die against regression from anypoint to which it may be moved, said means being releasable to permitrepositioning of the shoe, and means operable after the preliminarypressure is applied by the die for applying final pressure to the shoesupport.

2. A machine for forming the heel-seats of shoes for the reception ofwoodheels having, in combination, a shoe support, a die movable toward ashoe on the support, the shoe support being movable laterally relativelyto'the die to permit proper location of the heel-seat of the shoerelatively to the die, means for moving the die toward the shoe withpreliminary pressure and for holding the die against regression from anypoint to which it may be moved, said means being releasable to permitrepositioning of the shoe, and means 0per-- able after the preliminarypressure is applied by the die for applying a predetermined pressure tothe shoe support.

3. A machine for forming the heel-seats of shoes for the reception ofwood heels having, 7

in combination, a shoe support, a die for form- 9 ing the heel-seat of ashoe, a wedge for relatively moving the die and shoe support to and theheel-seat of the shoe and to prevent relative regression ofthe shoe anddie, said wedge being reversely operable to release the pressure ifdesired to permit repositioning of the shoe, and means for applyingfinal heavy pressure to the shoe, support to form the .heelseat. 7 V a la 4. A machine for forming the heel-seats of shoes for the reception ofwood heels having, in combination, a shoe support constructed andarranged topresent a shoe placed there ,7 the die carrier for moving thedie toward the shoe and for preventing-movement ofthe die on bottom upto the operator, a heel-seat die for forming the heel-seat of a shoe,means for adjusting the shoe support toward and from the die, means formoving the die toward the shoe with preliminary pressure and for holdingthe die against regression under heel-seat forming pressure, said meansbeing reversely operable to release the pressure if desiredjto permitrepositioning of, the shoe,, and means for applying a predeterminedfinal pressure to the shoe support to form the heel-seat.

7 5. A machine for forming the heel-seats of shoes for the reception ofwood heels having,

' in combination, a shoe support, a heel-seat die,

a die carrier movable toward a shoe on the support, means comprising amember of varying thickness operating between surfaces on the diecarrier andthe machine frame for moving the die against the shoe to holdthe shoe against accidental displacement after being positioned properlywith respect to the die, and means. for effecting upward movement of theshoe support to apply predetermined heel-seat forming pressure to theshoe.

6. A machine for formingvthe heel-seats of shoes for the reception ofwood heels having,

in combination, a shoe support, a die carrier. movable toward and fromthe support, a member of varying thickness acting directly on the diecarrier to move it toward the shoe and to. prevent movement of thecarrier away from the shoe, power means for raising the shoe support toapply heel-seat forming pressure to the shoe, and automatic meansoperating after the pressure on theshoeis releasedfor withdrawing saidmember. f

7. A machine for forming the heel-seats :of shoes-for the reception ofwoodheels having, in combinatiomashoe support, a die movable towardashoe on the support, means compris ing a wedge for moving thedieeagainst the f shoe to hold theshoe against accidental displacementafter being'positioned properly with respect to the die, and power meansforefl'ecting upward movement ofthe shoe support to apply, heel-seatforming pressure to the shoe. a i

8. A machine for forming. the heel-seats of shoes for the reception ofwood heels having, in combination, a shoe support, a die carrierInovable toward and from the support, a

' wedge acting directly on the diecarrier to move it toward the shoe andprevent ,movewedge.

ment of the carrier away from the shoe, power means for raising the shoesupport to apply heel-seatforming pressure to the shoe, and

spring means operating after the pressure on shoes for the reception ofwood heels having,

in combination, a shoesupport, mechanism for raising'the-shoe support,a, die and die carj rier movable toward the shoe support, a wedgearrangedto engage'surfaces on the frame and away from the shoe, a leverby which the wedge is movedinto engagement with the frame and carrier,and automatic means for V withdrawing the wedge. a I

10. A machine for forming the heel seats ofshoesfor theereception ofwood heels having, in combination, ashoe support, eccentrio and togglemechanism for operating the shoe support, a dieand die carrier movabletoward theshoe support, a wedge arranged to engage surfaces onithe frameand the die carrier for moving the die toward the shoe and forpreventing movement of the'die away from the shoe, a lever by which thewedge is moved into engagement with the frameand carrier, and springmeans for withdrawing the wedge.- a

11. A machine foriforming the heel-seats ofshoes for the reception ofwood heels having, in combination, a shoe-supoprt,eccentrio and togglemechanismfor operatingthe toward the shoe support, a spring forretracting the carrier, and-a wedge arranged to engage surfaces on theframe and die carrier for effecting movement of the die carrier towardthe shoe support. A

of shoes for thereception of wood heels having, in ;combinatio n,a shoesupport, eccentric and toggle mechanism for operating the shoe support,a die and die carrier movable toward the shoesupport, aspring forretracting the carrier, a wedge arranged to engage surfaces on the frameand die carrier for I effecting movement of the die carrier toward theshoe support, and a spring for retracting the wedge 12. A machine forformlng the heel-seats A .13. Amachine for formingtheheel-seats of'shoesfor the reception of wood heels having, in combination, a shoe support,poweroperatedme'chanis'm forraising the shoe support, a, die anddiecarrier movable toward the shoe support, a bifurcated wedge arrangedto embrace the diecarrier andto engage surfaces onthe'frameand diecarrier tomove the die carrier toward the shoe, a hand lever foroperating the wedge, and means" acting automatically to retract thewedge. I v 9 1 4. A machine for forming the heel-seats of shoes for thereception of wood heels having, in combination, a shoe support,eccentric and toggle mechanism for operating the shoe support, a die anddie carrier movable toward the shoe support, a bifurcated wedge arrangedto embrace the die carrier and to engage surfaces on the frame and diecarrier to move the die carrier toward the shoe, a

hand lever for operating the wedge, and a spring acting on the lever forretracting the wedge.

15. A machine for forming the heel-seats of shoes for the reception ofwood heels having, in combination, a shoe support, a die movablemanually against a shoe on the support with suflicient pressure to holdthe shoe against accidental displacement after being positioned properlywith respect to the die, means comprising a wedge of small angle foroperating the die to apply said pressure to the shoe, power means foreffecting upward movement of the shoe support to apply heel-seat formingpressure to the shoe, and means for withdrawing the wedge after theheel-seat has been formed.

16. A machine for forming the heel-seats of shoes for the reception ofwood heels having, in combination, a vertically adjustable work support,a die movable manually against a shoe on the support with sufficientpreliminary pressure to hold the shoe against accidental displacementafter being positioned by adjustment of the support into proximity tothe die, means comprising a wedge of small angle for operating the dieto apply said pressure, and power means for effecting upward movement ofthe work support to apply heel-seat forming pressure to the shoe.

In testimony whereof I have signed my name to this specification.

MILTON H. BALLABD.

